Normal aging leads to a decrease in brain volume, with gray and white matter shrinking and cerebrospinal fluid increasing, as measured by synthetic MRI. Highlights: Study Sample: 300 healthy adults (141 males, median age 48; 159 females, median age 50) were analyzed using synthetic MRI. Brain Volume Trends: Brain parenchymal volume (nBPV) decreases steadily with …
TLDR: Patients with noise-induced hearing loss (NIHL) exhibit significant changes in the white matter (WM) microstructure of their brains, particularly affecting the auditory and language pathways. Highlights: A study compared 122 patients with varying degrees of NIHL and 84 healthy controls. Diffusion tensor imaging (DTI) revealed significant differences in the white matter microstructure, particularly in …
Human intelligence is a complex cognitive trait that has fascinated scientists and philosophers for centuries. New research is shedding light on the neurobiological underpinnings of intelligence, from genes to cells to brain networks. Key Facts: Intelligence is one of the most heritable human behavioral traits, with genetics explaining 50-80% of variability between individuals. Over 1000 …
Narcissism is characterized by self-importance, entitlement, and interpersonal difficulties. Neuroscience research has begun to uncover the complex mechanisms underlying the paradoxical patterns of narcissistic functioning. Key findings show: Narcissism involves heightened vigilance and stress reactivity to ego threats despite outward grandiosity Alterations in brain regions involved in self-vs-other processing may underlie narcissistic self-focus and empathy …
A new brain imaging study has uncovered structural differences in the white matter of young men diagnosed with narcissistic personality disorder (NPD). These differences provide clues into the neural correlates underlying the grandiose sense of self and lack of empathy that characterize NPD. Key Facts: Researchers used diffusion tensor imaging to compare white matter microstructure …
Researchers have uncovered an important new mechanism that causes inflammation and damage to the brain’s white matter in Alzheimer’s disease. This discovery about how brain cells called microglia die could lead to new Alzheimer’s treatments. Key Facts: The study found that microglia, which are immune cells in the brain, die through a process called “ferroptosis” …
